CN114893812A

CN114893812A - Heat and cold supply system and control method thereof

Info

Publication number: CN114893812A
Application number: CN202210542810.4A
Authority: CN
Inventors: 王升; 李�杰; 丁文涛; 鲁志强; 刘纯
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-12

Abstract

The application relates to a heat and cold supply system and a control method thereof, wherein the heat and cold supply system comprises a cold supply component, a heat supply component, a cold supply system switching valve and a heat supply system switching valve, a freezing side water return pipe comprises two water return branches, and freezing side water return in a first water return branch directly flows back to a cold supply host through a freezing side water return pipe; and the switching valve of the cooling system is arranged on the first return water branch for controlling whether the first return water branch is communicated or not, and the switching valve of the heating system is arranged on the second return water branch for controlling whether the second return water branch is communicated or not. The water flow control problem can be solved to this application, can realize satisfying the demand of heating part with the waste heat of cooling part return water through the second return water branch road, greatly improves energy utilization and rates, has guaranteed the holistic stability of system.

Description

Heat and cold supply system and control method thereof

Technical Field

The application belongs to the technical field of cooling and heating, and particularly relates to a heating and cooling system and a control method thereof.

Background

In the energy utilization problem in the building field, how to ensure the high-efficiency and energy-saving cooling and heating becomes a key technology. The traditional heating and ventilation system is characterized in that a cooling system and a heating system are respectively and independently designed, for example, a set of cooling system is respectively adopted in places such as commercial office buildings and medical cosmetology, and a set of heating system is respectively and independently used for cooling and heating. The mode of heating and cooling non-coexistence is adopted because the system control is simpler and the system runs stably, but the defects are high cost, complex system composition form, low flexibility and low energy utilization rate. Because the problem of water flow distribution is generated when cooling and heating coexist, a stable and efficient cooling and heating system coexistence design scheme is lacked in the related art.

Disclosure of Invention

For overcoming traditional cooling and heating coexistence system at least to a certain extent and leading to system stability low because of lacking discharge distribution control, can not satisfy the problem of user's cooling and heating demand, this application provides a heating and cooling system and control method thereof.

In a first aspect, the present application provides a heating and cooling system comprising:

the cooling component, the heating component, the cooling system switching valve and the heating system switching valve;

the cooling component comprises a cooling main machine, a cooling water supply pipe and a freezing side water return pipe, wherein the cooling water supply pipe and the freezing side water return pipe are connected with the cooling main machine;

the heat supply assembly comprises a heat supply host machine, a heat supply water pipe and a heat supply water return pipe which are connected with the heat supply host machine;

the freezing side return water pipe comprises two return water branches, and freezing side return water in the first return water branch directly flows back to the cooling main machine through the freezing side return water pipe; the freezing side backwater in the second backwater branch is returned to the cooling main machine through the heat supply backwater pipe after being externally supplied with heat and output through the heat supply water supply pipe;

the switching valve of the cold supply system is arranged on the first return water branch and is used for controlling whether the first return water branch is communicated or not;

and the heating system switching valve is arranged on the second water return branch and is used for controlling whether the second water return branch is communicated or not.

Further, the method also comprises the following steps:

the freezing water return main pipe flow meter is arranged on the freezing side water return pipe and is used for acquiring freezing water return flow;

the heat supply and water return main pipe flowmeter is arranged on the heat supply and water return pipe and is used for acquiring heat supply and water return flow;

and the hot water supply main pipe flowmeter is arranged on the hot water supply pipe and is used for acquiring the hot water supply flow.

Further, the heating assembly further comprises:

the heat supply and water return main pipe regulating valve is arranged on the heat supply and water return pipe and is used for regulating the flow of heat supply and water return;

and the heat and water supply main regulating valve is arranged on the heat and water supply pipe and is used for regulating the flow of heat and water supply.

Further, the cooling assembly further includes:

and the freezing water pump is arranged on the freezing side water return pipe and is used for adjusting the water flow rate in the freezing side water return pipe.

Further, the heating assembly further comprises:

and the hot water supply pump is arranged on the hot water supply pipe and is used for adjusting the water flow speed in the hot water supply pipe.

In a second aspect, the present application provides a method for controlling a heating and cooling system, which is applied to the heating and cooling system of the first aspect, and includes:

acquiring hot water outlet temperature and/or cold water outlet temperature set by a user;

controlling the states of the cooling host, the heating host, the cooling system switching valve and the heating system switching valve according to the cold water outlet temperature so that the cold water supply pipe outputs cold water corresponding to the cold water outlet temperature;

and/or the presence of a gas in the gas,

and controlling the states of the cooling host, the heating host, the cooling system switching valve and the heating system switching valve according to the hot water outlet temperature so that the hot water corresponding to the hot water outlet temperature is output by the heating water supply pipe.

Further, the method also comprises the following steps:

receiving a water supply mode selected by a user;

and controlling the states of the cooling host, the heating host, the cooling system switching valve and the heating system switching valve according to the water supply mode so that the heating and cooling system outputs cold water and/or hot water with the set temperature in the corresponding mode.

Further, the water supply mode includes a cooling mode, and the states of the cooling host, the heating host, the cooling system switching valve and the heating system switching valve are controlled according to the water supply mode, so that the heating and cooling system outputs cold water and/or hot water at a set temperature in a corresponding mode, including:

opening a switching valve of a cooling system and closing a switching valve of a heating system;

and controlling the cold supply host to output cold water corresponding to the temperature set by the user.

Further, the water supply mode includes a summer mode, and the states of the cooling host, the heating host, the cooling system switching valve and the heating system switching valve are controlled according to the water supply mode, so that the heating and cooling system outputs cold water and/or hot water with a set temperature in a corresponding mode, including:

closing a switching valve of a cold supply system, opening a switching valve of a heat supply system, and opening a regulating valve of a heat supply and water supply main pipe and a regulating valve of a water return main pipe of the heat supply system;

controlling the cooling host to output cold water corresponding to the temperature of the cold water set by the user;

and controlling the heat supply host to output hot water corresponding to the hot water temperature set by the user.

Further, the water supply mode includes a winter mode, and controlling states of the cooling main unit, the heating main unit, the cooling system switching valve and the heating system switching valve according to the water supply mode to enable the heating and cooling system to output cold water and/or hot water at a set temperature in a corresponding mode includes:

opening a switching valve of a cooling system and opening a switching valve of a heating system;

judging whether the hot water supply flow is less than or equal to the upper limit percentage of the preset flow of the freezing backwater flow or not according to the preset interval time;

if not, the opening of the heat supply water supply main pipe regulating valve, the opening of the heat supply water return main pipe regulating valve and the frequency of the freezing water pump are regulated, so that the hot water supply flow is smaller than or equal to the preset upper flow limit percentage of the freezing water return flow.

Further, the method also comprises the following steps:

and when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow, adjusting the frequency of the freezing water pump, the heat supply return water main pipe regulating valve and the heat supply water main pipe regulating valve according to the load of the cooling main machine and the load of the heat supply main machine so as to enable the load of the cooling main machine and the load of the heat supply main machine to meet the preset load requirement.

Further, the method also comprises the following steps:

when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow, judging whether the condition of adjusting the working frequency of the freezing water pump is met according to the preset frequency, wherein the working frequency condition of the freezing water pump comprises that the time for meeting the condition that the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow reaches the preset adjusting judgment time of the freezing water pump;

if yes, increasing the working frequency of the chilled water pump according to a preset frequency adjusting value.

Further, the method also comprises the following steps:

when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow and the frequency of the freezing water pump is increased to the maximum value, judging whether the conditions of adjusting the adjusting valve of the heat supply assembly are met according to the preset frequency, wherein the conditions of adjusting the adjusting valve of the heat supply assembly comprise that the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow and the duration time of increasing the frequency of the freezing water pump to the maximum value reaches the adjustment judgment time of the adjusting valve of the heat supply assembly;

if yes, the opening of the regulating valve of the heat supply and water supply main pipe and the opening of the regulating valve of the heat supply and water return main pipe are reduced according to the preset regulating value of the opening of the regulating valve.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the embodiment of the invention provides a heat and cold supply system and a control method thereof, wherein the heat and cold supply system comprises a cold supply component, a heat supply component, a cold supply system switching valve and a heat supply system switching valve, the cold supply component comprises a cold supply host, a cold supply water pipe and a freezing side water return pipe, the cold supply water pipe and the freezing side water return pipe are connected with the cold supply host, the heat supply component comprises a heat supply host, a heat supply water pipe and a heat supply water return pipe, the heating side water return pipe is connected with the heat supply host, the freezing side water return pipe comprises two water return branches, and freezing side water in a first water return branch directly flows back to the cold supply host through the freezing side water return pipe; the freezing side return water in the second return water branch road is through the external heat supply output back of heat supply delivery pipe, return water again through the heat supply wet return and flow back to the cooling host computer, the diverter valve setting of cooling system is on first return water branch road, whether be used for controlling first return water branch road to communicate, the diverter valve setting of heating system is on second return water branch road, whether be used for controlling second return water branch road to communicate, can realize heat supply and cold supply coexistence through cooling system diverter valve and heating system diverter valve, solve the discharge control problem, the holistic stability of system has been guaranteed, satisfy user's cooling, the heat supply demand, and, can realize satisfying the demand of heating part with the waste heat of cooling part return water through second return water branch road, greatly improve energy utilization.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a functional block diagram of a heating and cooling system according to an embodiment of the present application.

Fig. 2 is a flowchart of a control method of a heating and cooling system according to an embodiment of the present application.

Fig. 3 is a flowchart of another heating and cooling system control method according to an embodiment of the present application.

Fig. 4 is a flowchart of another heating and cooling system control method according to an embodiment of the present application.

Fig. 5 is a flowchart of another heating and cooling system control method according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a functional block diagram of a heating and cooling system according to an embodiment of the present application, and as shown in fig. 1, the heating and cooling system includes:

a cooling module, a heating module, a cooling system switching valve 107, and a heating system switching valve 108;

the cooling component comprises a cooling main machine 101, a cooling water supply pipe 102 and a freezing side water return pipe 103 which are communicated with the cooling main machine 101;

the heat supply assembly comprises a heat supply host 104, a heat supply water supply pipe 105 and a heat supply water return pipe 106 which are communicated with the heat supply host 104;

the freezing side water return pipe 103 comprises two water return branches, and freezing side water return in the first water return branch directly flows back to the cooling main machine 101 through the freezing side water return pipe; the return water at the freezing side in the second return water branch is output for external heat supply through a heat supply water supply pipe 105, and then flows back to the cooling host 101 through a heat supply return water pipe 106;

the cold supply system switching valve 107 is arranged on the first return water branch and is used for controlling whether the first return water branch is communicated or not;

the heating system switching valve 108 is arranged on the second water return branch and used for controlling whether the second water return branch is communicated or not.

The traditional heating and ventilation system adopts a cold supply system and a heat supply system which are respectively designed independently, the design mode has high manufacturing cost, the system composition form is complex, the flexibility is low, and the energy utilization rate is not high. Because the problem of water flow distribution is generated when cooling and heating coexist, a stable and efficient cooling and heating system coexistence design scheme is lacked in the related art.

In this embodiment, the freezing side wet return two-stage process design of cooling subassembly, one section and the design of crossing over the series connection of heating part supply channel, one section and the design of cooling part series connection, cooling system return water can get into heating system on the one hand and supply water to survey, after being mixed by return water side play water and cooling system return water, water reentrant cooling system realizes that cooling heating system coexists, the pipeline boundary utilizes the valve to make the switching, the user also can use the cooling subassembly alone to realize cooling or use the heating subassembly alone and realize the heat supply.

In this embodiment, the heat and cold supply system includes a cold supply component, a heat supply component, a cold supply system switching valve, and a heat supply system switching valve, the cold supply component includes a cold supply host, a cold supply pipe connected to the cold supply host, and a freezing side water return pipe, the heat supply component includes a heat supply host, a heat supply pipe connected to the heat supply host, and a heat supply water return pipe, the freezing side water return pipe includes two water return branches, and freezing side water return in the first water return branch directly flows back to the cold supply host through the freezing side water return pipe; the freezing side return water in the second return water branch road is through the external heat supply output back of heat supply delivery pipe, return water again through the heat supply wet return and flow back to the cooling host computer, the diverter valve setting of cooling system is on first return water branch road, whether be used for controlling first return water branch road to communicate, the diverter valve setting of heating system is on second return water branch road, whether be used for controlling second return water branch road to communicate, can realize heat supply and cold supply coexistence through cooling system diverter valve and heating system diverter valve, solve the discharge control problem, the holistic stability of system has been guaranteed, satisfy user's cooling, the heat supply demand, and, can realize satisfying the demand of heating part with the waste heat of cooling part return water through second return water branch road, greatly improve energy utilization.

In some embodiments, as shown in fig. 1, the heating and cooling system further includes:

the freezing water return main flow meter 109 is arranged on the freezing side water return pipe 103, and the freezing water return main flow meter 109 is used for acquiring freezing water return flow;

the heat supply and return water main flow meter 110 is arranged on the heat supply and return water pipe 106, and the heat supply and return water main flow meter 110 is used for acquiring heat supply and return water flow;

a hot water supply main flow meter 111 provided in the hot water supply pipe 105, and the hot water supply main flow meter 111 is used to obtain a hot water supply flow rate.

The heat supply assembly further includes:

the heating and water returning main regulating valve 112 is arranged on the heating and water returning pipe 106, and the heating and water returning main regulating valve 112 is used for regulating the flow of heating and water returning;

a heating supply water main regulating valve 113 provided on the heating supply water pipe 105, the heating supply water main regulating valve 113 for regulating the heating supply water flow.

The cooling assembly further includes:

a freezing water pump 114 provided on the freezing-side water return pipe 103, the freezing water pump 114 being used to adjust the flow rate of water in the freezing-side water return pipe 103.

The heat supply assembly further includes:

a hot water supply pump 115 provided on the hot water supply pipe 105, the hot water supply pump 115 being used to adjust the flow rate of water in the hot water supply pipe.

Traditional cooling and heating coexisting system is because cooling system and heating system independent setting, and the cooling return water can not flow into heating system, when carrying out terminal output temperature regulation, because the discharge ratio of cooling system and heating system output is uncertain, can lead to terminal output temperature to change suddenly high and suddenly low, produces the temperature and vibrates.

In this embodiment, the flow meter is configured on the return water manifold of the cooling system, the flow meter and the regulating valve are configured on the inlet water manifold of the heating system, the control center in the heating and cooling system receives flow data in the freezing and return water manifold flow meter 109, the heating and return water manifold flow meter 110 and the hot water manifold flow meter 111, and controls the states of the switching valve 107 of the cooling system, the switching valve 108 of the heating system, the regulating valve 112 of the heating and return water manifold and the regulating valve 113 of the heating and supply water manifold, and the power of the freezing water pump 114 and the hot water pump 115, so that the cooling host and the heating host can meet the load requirement, and the return water of the cooling part is communicated with the heating part through the second return water branch, and the return water of the freezing water is subjected to heat exchange by the heating part, so as to avoid over-high or over-low return water temperature, so that the cooling part is stably regulated, and large-amplitude fluctuation is avoided, and the cooling part is controlled by the flow meter, the regulating valve, The partial water supply total amount of heat supply, the return water total amount, can guarantee that terminal output temperature is stable, solve traditional cooling heat supply coexistence system and lead to the problem that the temperature vibrates because of lacking discharge distribution control, guarantee under the prerequisite that does not influence the normal cooling demand of user, the waste heat of make full use of cooling return water satisfies the heat supply demand, greatly improve energy utilization, and, can satisfy user's heat supply cooling demand simultaneously in a system, do not increase the hardware cost, the system composition form is simple, the flexibility is high.

Fig. 2 is a flowchart of a heating and cooling system control method according to an embodiment of the present application, and as shown in fig. 2, the heating and cooling system control method is used for controlling the heating and cooling system according to the above embodiment, and includes:

s21: acquiring hot water outlet temperature and cold water outlet temperature set by a user;

s22: controlling the states of a switching valve of the cold supply system and a switching valve of the heat supply system according to the outlet water temperature of the cold water so that the cold water supply pipe outputs the cold water corresponding to the outlet water temperature of the cold water;

s23: and controlling the states of the switching valve of the cooling system and the switching valve of the heating system according to the hot water outlet temperature so that the hot water supply pipe outputs hot water corresponding to the hot water outlet temperature.

It should be noted that, the user may also set only the hot water outlet temperature or the cold water outlet temperature to meet the requirement of cooling or heating.

In this embodiment, the switching valve of the cooling system is arranged on the first return water branch and is used for controlling whether the first return water branch is communicated or not; the switching valve of the heating system is arranged on the second return water branch and is used for controlling whether the second return water branch is communicated or not, and the water flow control problem when cooling and heating coexist is solved by controlling the states of the cooling host, the heating host, the switching valve of the cooling system and the switching valve of the heating system, so that the overall stability of the system is ensured; the second return water branch can meet the requirement of the heat supply part on the residual heat of the return water of the cold supply part, and the energy utilization rate is greatly improved.

In some embodiments, further comprising:

receiving a water supply mode selected by a user;

and controlling the states of the switching valve of the cooling system and the switching valve of the heating system according to the water supply mode so that the heating and cooling system outputs cold water and/or hot water with the set temperature in the corresponding mode.

In some embodiments, the water supply mode includes a cooling mode, and as shown in fig. 3, controlling states of the cooling system switching valve and the heating system switching valve according to the water supply mode to enable the heating and cooling system to output cold water and/or hot water at a temperature set in the corresponding mode includes:

s31: opening a switching valve of a cooling system and closing a switching valve of a heating system;

s32: and controlling the cold supply host to output cold water corresponding to the temperature set by the user.

In the use scene with only cooling demand, the cooling demand of a user can be met by opening the switching valve of the cooling system and closing the switching valve of the heating system.

In some embodiments, the water supply mode includes a summer mode, and controlling the states of the cooling system switching valve and the heating system switching valve according to the water supply mode, as shown in fig. 4, so that the heating and cooling system outputs cold water and/or hot water having a temperature set in a corresponding mode, includes:

s41: closing a switching valve of a cold supply system, opening a switching valve of a heat supply system, and opening a regulating valve of a heat supply and water supply main pipe and a regulating valve of a water return main pipe of the heat supply system;

s42: controlling the cooling host to output cold water corresponding to the temperature of the cold water set by the user;

s43: and controlling the heat supply host to output hot water corresponding to the hot water temperature set by the user.

Because the return water temperature of the chilled water is higher in summer, sufficient heat exchange can be carried out through the heat supply part firstly, so that the return water temperature is reduced, and the phenomenon that the cold supply part greatly reduces the cold supply temperature to cause water temperature oscillation is avoided.

As the heat supply demand of users is not high in summer, the waste heat can be fully utilized, the work-doing efficiency of a cold source system is improved, and the test shows that the energy efficiency of the main machine is improved by about 3% when the cooling return water at 1 ℃ is improved.

In some embodiments, the water supply mode includes a winter mode, as shown in fig. 5, and the states of the cooling main unit, the heating main unit, the cooling system switching valve, and the heating system switching valve are controlled according to the water supply mode, so that the heating and cooling system outputs cold water and/or hot water at a temperature set in the corresponding mode, including:

s51: opening a switching valve of a cooling system and opening a switching valve of a heating system;

s52: judging whether the hot water supply flow is less than or equal to the upper limit percentage of the preset flow of the freezing backwater flow or not according to the preset interval time, if not, executing S53, and if so, executing S55;

s53: the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow by adjusting the opening of the heating supply water main pipe adjusting valve, the opening of the heating return water main pipe adjusting valve and the frequency of the freezing water pump.

In this embodiment, the preset upper flow limit percentage is 90%.

S54: and when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow, adjusting the frequency of the freezing water pump, the heat supply return water main pipe regulating valve and the heat supply water main pipe regulating valve according to the load of the cooling main machine and the load of the heat supply main machine so as to enable the load of the cooling main machine and the load of the heat supply main machine to meet the preset load requirement.

S55: judging whether the working frequency condition of the chilled water pump is met or not according to a preset frequency, wherein the working frequency condition of the chilled water pump comprises that the time when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the chilled return water flow reaches the preset chilled water pump adjusting judgment time, if so, executing S56, otherwise, executing S55;

in this embodiment, the preset frequency is, for example, 60s, and the preset chilled water pump adjustment determination time is, for example, 60 s.

S56: and increasing the working frequency of the chilled water pump according to a preset frequency adjusting value.

In this embodiment, the preset frequency adjustment value is 1 Hz.

S57: when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow and the frequency of the freezing water pump is increased to the maximum value, judging whether the conditions of adjusting the adjusting valve of the heat supply assembly are met according to the preset frequency, wherein the conditions of adjusting the adjusting valve of the heat supply assembly comprise that the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing return water flow and the duration time of increasing the frequency of the freezing water pump to the maximum value reaches the adjusting judgment time of the adjusting valve of the preset heat supply assembly, if so, S58 is executed, otherwise, S57 is executed;

in this embodiment, the preset adjusting valve of the heat supply assembly is adjusted for 60 s.

S58: and reducing the opening of the regulating valve of the heat supply and water supply main pipe and the opening of the regulating valve of the heat supply and water return main pipe according to the preset regulating valve opening regulating value.

In this embodiment, the preset regulating valve opening regulating value is 2% of the current opening.

Because the heat supply demand is higher in winter, but have partial cooling demand, adjust the heat supply demand under the demand prerequisite of guaranteeing the user cooling, because the refrigerated water return water temperature in winter is lower, can carry out abundant heat transfer through the heat supply part earlier to promote return water temperature, avoid the heat supply part to promote the water supply temperature by a wide margin and produce the temperature oscillation, can guarantee the stability of heat supply cooling coexistence time system through control chilled water pump operating frequency and return water valve aperture.

In this embodiment, through unique valve control and pipeline design, guarantee the stable heat supply of system, heat supply demand and cooling demand under the different operating modes of full consideration, monitor the real-time flow of cooling system and heating system, when heating system flow less than or equal to the setting value of cooling system flow appears, promote cooling system frozen water pump frequency, still do not satisfy the flow condition when promoting to the biggest, reduce heating system's water inlet and return valve opening again, until the flow condition satisfies, satisfy again under the big prerequisite of the water flow relation of system, adjust heating system's water inlet and return valve opening again to system load, cooling system's water pump frequency adjusts, thereby solve the temperature shock problem that cooling heating system moves simultaneously because of water flow distribution produces, realize satisfying the demand of user's cooling and heating, guarantee system stability.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.

Claims

1. A heating and cooling system, comprising:

2. A heating and cooling system according to claim 1, further comprising:

3. A heating and cooling system according to claim 1, wherein the heating assembly further comprises:

4. A heating and cooling system as recited in claim 1, wherein said cooling assembly further comprises:

5. A heating and cooling system according to claim 1, wherein the heating assembly further comprises:

6. A control method for a heating and cooling system, which is applied to the heating and cooling system according to any one of claims 1 to 5, and which comprises:

and/or the presence of a gas in the gas,

7. A heating and cooling system control method according to claim 6, further comprising:

receiving a water supply mode selected by a user;

8. A heating and cooling system control method according to claim 7, wherein the water supply mode includes a cooling mode, and the controlling states of the cooling main unit, the heating main unit, the cooling system switching valve, and the heating system switching valve according to the water supply mode to make the heating and cooling system output cold water and/or hot water at a temperature set in a corresponding mode comprises:

9. A heating and cooling system control method according to claim 7, wherein the water supply mode includes a summer mode, and the controlling states of the cooling main unit, the heating main unit, the cooling system switching valve, and the heating system switching valve according to the water supply mode to make the heating and cooling system output cold water and/or hot water at a temperature set in a corresponding mode comprises:

10. A heating and cooling system control method according to claim 7, wherein the water supply mode includes a winter mode, and the controlling states of the cooling main unit, the heating main unit, the cooling system switching valve, and the heating system switching valve according to the water supply mode to make the heating and cooling system output cold water and/or hot water at a temperature set in a corresponding mode comprises:

11. A heating and cooling system control method according to claim 10, further comprising:

12. A heating and cooling system control method according to claim 10, further comprising:

if so, increasing the working frequency of the chilled water pump according to a preset frequency adjusting value.

13. A heating and cooling system control method according to claim 12, further comprising:

when the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing water return flow and the frequency of the freezing water pump is increased to the maximum value, judging whether the conditions of adjusting the adjusting valve of the heat supply assembly are met according to the preset frequency, wherein the conditions of adjusting the adjusting valve of the heat supply assembly comprise that the hot water supply flow is less than or equal to the preset upper flow limit percentage of the freezing water return flow and the duration of the frequency of the freezing water pump increased to the maximum value reaches the adjustment judgment time of the adjusting valve of the heat supply assembly;